原生JS实现angular的双向数据绑定

window. onload = function (){

var allEle = document. getElementsByTagName ( "*" );

var $scope = {};

function $apply (){

Array . from (allEle). forEach ( ele => {

var model = ele. getAttribute ( 'ng-model' );

if (model){

if ($scope[model]){

ele.value = $scope[model];

} else {

ele.value = "" ;

}

}

});

}

Array . from (allEle). forEach ( ele => {

var model = ele. getAttribute ( "ng-model" );

if (model){

ele. oninput = function (){

$scope[model] = this.value;

$apply ();

}

}

})

}